Program Listing for File trigger_component.h

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#pragma once

#include "common/common.h"
#include "scene.h"
#include "collision_component.h"
#include "components/space/transform_component.h"

#include "BulletCollision/CollisionDispatch/btGhostObject.h"

class TriggerComponent : public CollisionComponent
{
    COMPONENT(TriggerComponent, Category::Physics);
    DEPENDS_ON(TransformComponent);

    Ref<btBoxShape> m_BoxShape;
    btGhostObject* m_Body = nullptr;

    Vector3 m_Dimensions;
    bool m_EntryRepeat;
    Vector<SceneID> m_EntryTargetIDs;

    bool m_ExitRepeat;
    Vector<SceneID> m_ExitTargetIDs;

    Vector<SceneID> m_EntryList;
    Vector<SceneID> m_LastUpdateEntryList;
    bool m_IsEntryNotified = false;
    bool m_IsExitNotified = false;

    void openRegister();
    void registerEntry(SceneID id);
    int findExitCount() const;
    void closeRegister();

    void notifyEntry();
    void notifyExit();
    bool isExitNotified() { return m_IsExitNotified; }
    bool isEntryNotified() { return m_IsEntryNotified; }
    bool canNotifyEntry() { return !isEntryNotified() || isEntryRepeat(); }
    bool canNotifyExit() { return !isExitNotified() || isExitRepeat(); }

    void addTarget(Vector<SceneID>& list, SceneID toAdd);
    void removeTarget(Vector<SceneID>& list, SceneID toRemove);

    void updateTransform();

    friend class TriggerSystem;

public:
    TriggerComponent(Entity& owner, const JSON::json& data);
    ~TriggerComponent() = default;

    bool isEntryRepeat() { return m_EntryRepeat; }
    bool isExitRepeat() { return m_ExitRepeat; }

    void setDimensions(const Vector3& dimensions);

    void addEntryTarget(SceneID toAdd);
    void addExitTarget(SceneID toAdd);
    void removeEntryTarget(SceneID toRemove);
    void removeExitTarget(SceneID toRemove);

    btGhostObject* getGhostObject() { return m_Body; };

    bool setupData() override;
    JSON::json getJSON() const override;
    void draw() override;
};

DECLARE_COMPONENT(TriggerComponent);